X 2011 BMW 550i xDrive Gran Turismo

4.4 L, 8 cyl, Auto (S8), Premium Gasoline

MSRP: $66,700

EPA Fuel Economy

Combined: 17 MPG

City: 15 MPG

Highway: 22 MPG

X 2006 Audi A4

2.0 L, 4 cyl, Auto (variable gear ratios), Premium Gasoline

EPA Fuel Economy

Combined: 24 MPG

City: 21 MPG

Highway: 30 MPG